code: def test_negative_values_haralick():
      # https://github.com/luispedro/mahotas/issues/72
      f = 255 * np.random.random((16, 16))
      f = f.astype(np.int8)
      with pytest.raises(ValueError):
          mh.features.haralick(f)
  
imports: import numpy
  from mahotas.features import texture
  import mahotas
  import mahotas.features._texture
  import pytest
label_desc: Use image node_id 23 for calling a global function with example usage: test_negative_values_haralick() without return types